Item Type: 
Article

Erschienen: 
2007 
Creators: 
Bothe, D. and Shirzadi, H. and Warnecke, H.J. 
Title: 
Evaluations of EulerEuler Simulations of Bubble Columns by Numerical Tracer Experiments 
Language: 
English 
Journal or Publication Title: 
Trans. IChemE Part A 
Volume: 
85 
Uncontrolled Keywords: 
Bubble Columns, Hydrodynamics, EulerEuler Model, ConvectionDispersion
Model, Mixing, Turbulence 
Divisions: 
04 Department of Mathematics > Mathematical Modelling and Analysis UNSPECIFIED Zentrale Einrichtungen 04 Department of Mathematics 
Date Deposited: 
12 Apr 2011 12:37 
Identification Number: 
doi:10.1205/cherd06249 
Alternative Abstract: 
Alternative abstract  Language 

This paper considers the question of how to evaluate EulerEuler simulations of
macromixing in twophase bubble columns. Here, the idea is to perform tracer experiments
(jump responses) both experimentally and also numerically. In both cases the resulting data is
then analyzed on the basis of the convectiondispersion model. Given that the integral
quantities gas holdup, axial dispersion coefficient (i.e. Bodenstein number) and mean
residence time show sensitivity with respect to the physical phenomena, the applied
turbulence models (i.e. k� and SST) and the boundary conditions, respectively to their
numerical consequences, this approach provides a means to evaluate the quality of
sophisticated mathematical models and their numerical realization.  English 

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